2,3-Dimethylbutane
- CAS No.
- 79-29-8
- Chemical Name:
- 2,3-Dimethylbutane
- Synonyms
- NSC 24837;DIISOPROPYL;Biisopropyl;DIISOPROPANE;DIMETHYLBUTANE;2.3-DiMethylbu;(CH3)2CHCH(CH3)2;2,3-Dimethybutane;2,3-DIMETHYLBUTANE;dimethyl-2,3butane
- CBNumber:
- CB6122117
- Molecular Formula:
- C6H14
- Molecular Weight:
- 86.18
- MOL File:
- 79-29-8.mol
- Modify Date:
- 2024/3/14 15:18:27
| Melting point | -129 °C |
|---|---|
| Boiling point | 58 °C(lit.) |
| Density | 0.662 g/mL at 25 °C(lit.) |
| vapor density | 3 (vs air) |
| vapor pressure | 7.41 psi ( 37.7 °C) |
| refractive index |
n |
| Flash point | −28 °F |
| storage temp. | Flammables area |
| solubility | In methanol: 495, 593, 760, and 1,700 g/L at 5, 10, 15, and 20 °C, respectively. Miscible at higher temperatures (Kiser et al., 1961). |
| pka | >14 (Schwarzenbach et al., 1993) |
| form | Liquid |
| color | Colorless |
| explosive limit | ~7.7% |
| Odor Threshold | 0.42ppm |
| Water Solubility | Soluble in water (1mg/ml @22°C), DMSO, ethanol, acetone. |
| BRN | 1730737 |
| Henry's Law Constant | 1.28(atm?m3/mol) at 25 °C (Mackay and Shiu, 1981) |
| Exposure limits | ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and 1,000 ppm, respectively (adopted). |
| Dielectric constant | 1.8899999999999999 |
| Stability | Stable. Flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, oxygen. |
| InChIKey | ZFFMLCVRJBZUDZ-UHFFFAOYSA-N |
| LogP | 3.42 |
| CAS DataBase Reference | 79-29-8(CAS DataBase Reference) |
| EPA Substance Registry System | 2,3-Dimethylbutane (79-29-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H304-H315-H336-H411 | |||||||||
| Precautionary statements | P210-P233-P273-P301+P310-P303+P361+P353-P331 | |||||||||
| Hazard Codes | F,Xn,N | |||||||||
| Risk Statements | 11-65-67-51/53-38 | |||||||||
| Safety Statements | 16-23-33-62-61-29-9 | |||||||||
| RIDADR | UN 2457 3/PG 2 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 100.0 ppm; 350.0 mg/m3, STEL: 510.0 ppm; 1800.0 mg/m3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | EJ9350000 | |||||||||
| Autoignition Temperature | 788 °F | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29011000 | |||||||||
| NFPA 704 |
|
2,3-Dimethylbutane price More Price(7)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | D151602 | 2,3-Dimethylbutane 98% | 79-29-8 | 100ML | ₹6103.35 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | D151602 | 2,3-Dimethylbutane 98% | 79-29-8 | 500ML | ₹19995.15 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 39760 | 2,3-Dimethylbutane analytical standard | 79-29-8 | 5ML | ₹5928.68 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 39760 | 2,3-Dimethylbutane analytical standard | 79-29-8 | 10ML | ₹10737.38 | 2022-06-14 | Buy |
| TCI Chemicals (India) | D0690 | 2,3-Dimethylbutane min. 98.0 % | 79-29-8 | 5ML | ₹1600 | 2022-05-26 | Buy |
2,3-Dimethylbutane Chemical Properties,Uses,Production
Chemical Properties
2,3-Dimethylbutane, C6H14, is a flammable liquid with a specific gravity of 0.66164. It is released into the atmosphere from automobile, biomass combustion, and gasoline vapor emissions.
Physical properties
Colorless liquid with a mild gasoline-like odor. An odor threshold concentration of 4.2 ppmv was reported by Nagata and Takeuchi (1990).
Uses
2,3-Dimethylbutane is used in high octane fuels and in organic synthesis. It is also used as a gas chromatography standard.
Production Methods
2,3-Dimethylbutane is produced from crude oil, natural liquid gases, and petroleum refining processes.
General Description
A clear colorless liquid with a petroleum-like odor. Flash point -20°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
Saturated aliphatic hydrocarbons, such as 2,3-DIMETHYLBUTANE, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. 2,3-DIMETHYLBUTANE is incompatible with oxidizing materials. 2,3-DIMETHYLBUTANE is also incompatible with oxygen. .
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Safety Profile
Probably an irritant and narcotic in high concentration. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. Keep away from heat and open flame. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
Environmental Fate
Photolytic. Major products reported from the photooxidation of 2,3-dimethylbutane with
nitrogen oxides are carbon monoxide and acetone. Minor products included formaldehyde,
acetaldehyde and peroxyacyl nitrates (Altshuller, 1983). Synthetic air containing gaseous nitrous
acid and exposed to artificial sunlight (λ = 300–450 nm) photooxidized 2,3-dimethylbutane into
acetone, hexyl nitrate, peroxyacetal nitrate, and a nitro aromatic compound tentatively identified
as a propyl nitrate (Cox et al., 1980).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. 2,3-
Dimethylbutane will not hydrolyze because it has no hydrolyzable functional group.
Purification Methods
Distil it from sodium, pass it through a column of silica gel (activated by heating in nitrogen to 350o before use) to remove unsaturated impurities, and again distil it from sodium. Also distil it azeotropically with MeOH, then wash with water, dry (Na2SO4) it, and redistil it. [Beilstein 1 IV 371.]
2,3-Dimethylbutane Preparation Products And Raw materials
Raw materials
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chevron_rightPreparation Products
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| INOX Air Products Pvt. Ltd. | 91-22-41252348 | Maharashtra, India | 53 | 58 | Inquiry |
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